Wednesday, June 6, 2018

Rex begonia

Rex begonias are native to the tropical and subtropical regions of South and Central America, Africa and Asia. They have advanced as understory plants requiring a good amount of shade to flourish. Rex begonias are rhizomatous in growth habit, but are grouped separately because of the colour of their leaves.

Begonia, a genus in the flowering plants family Begoniaceae is one of the ten largest angiosperm genera. Begonias are attractive perennial herbs with soft, succulent stems, and white, pink, red, orange, or yellow flowers.

Most begonias are grown as flowering pot plants, but the Rex begonia (Begonia rex-cultorum) is grown primarily for its brightly colored, variegated foliage.

Rex begonia leaves will grow easily from wedges placed half their length into propagating sand. It is best kept in bright light but not direct sun. Use a good, open potting mix. For best results grow the more delicate Rexes in a cold glasshouse or terrarium. e.g. old fish tanks.

The optimum temperature to maximize growth and continue optimum root development is 74 to 77° F days and 63 to 65° F nights.

Begonias can be high in fructose, which determines that they may taste sweet or sour, and are used in the Philippines and Brazil as flavoring constituents. In Indonesia, China and Brazil begonia leaves are popular in salads.
Rex begonia
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